Chestee m



(No Model.)

O. M. BALDWIN.

NUT LUCK.

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. 25 the opposite sides of the webs thereof.

PATENT OFFICE.

CHESTER M. BALDWIN, OF BRONSON MICHIGAN, ASSIGNOR OF ONE-HALF TO LEWIS ZIMMERMAN, OF SAME PLACE.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 388,332, dated August 21,1888.

Application filed December 31, 1887. Serial No. 259,501. (No model.)

To all whom it may concern.-

Be it known that I, OHEsTER M. BALDWIN, a citizen of the United States, residing at Bronson, in the county of Branch and State of Michigan, have invented a new and useful Im provement in Nut-Locks, of which the following is a specification.

The invention relates to improvements in nut-locks; and it consists in the construction and novel combination of parts hereinafter described, illustrated in the accompanying drawings, and pointed out in the claim hereto annexed.

In the drawings, Figure 1 is a perspective I5 view of a rail-joint with the invention applied thereto. Fig. 2 is a perspective view of one of the locking-dogs detached. Fig. 3 isa perspective view showing the inner surface and upper edge of the fish-plate on which the nut rests. Fig. 4 is a detailsectional view to show the floor of a recess in section.

Referring to the drawings by letter, A A designate the meeting ends of two rails, and B B designate the fish-plates,that rest against The fish-plate B is of ordinary construction; but the fislrplate B is provided on its upper edge with-the notches 0, equal in number to the bolt-holes c and as far therefrom on one side 0 as half the width of a nut, the said notches being all on that side of the corresponding bolt-holes toward which the nuts unscrew.

Descending from each notch O on the front surface of the fish-plateB is a vertical recess,

5 D, having an outwardly-inclined floor, d, for

a purpose hereinafter explained.

E is a groove extending longitudinally the whole length of the fish-plate B in its upper edge, e, which rest against the heads of the rails. The said groove passes through the top portions of the scales of the recesses d and forms a socket for the laterally-extended journalsf of the locking-dogs F. The said dogs have the armsf depending from theirjournals, which arms, when the dogs are in place in the recesses D, curve downward and outward, the outwardly-standing end portion, f, of each resting against the adjoining side of the corresponding nut. When the bolts are in place and the nuts are screwed home thereon, the said armsf lie against their edges and prevent them from turning in either direction, so that they can neither unscrew nor lap. When it is desired to remove the nuts, the lockingdogs are turned upward on their journals, their curves being made such that they will fit over the rounded edges of the heads of the adjacent rail,which will keep them raised, so that a wrench can be easily applied to the nuts. If desired, the locking dogs can be '30 placed on the opposite side of the corresponding nuts, as the latter are prevented from turning in either direction by said dogs; but the described positions are preferable.

Having described my invention, I claim- In a nut-lock, the combination of the nuts, the fish-plate having a socket-groove in its upper edge which rests against the rails heads, and recesses extending downwardly and outwardly from said groove on the side of the adjacent nuts toward which the latter unscrew, and the locking-dogs provided with journals at their tops resting in said groove, and arms extending downward in the recesses and lying against the edges of the corresponding nuts, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto afiixed my signature in presence of two witnesses.

CHESTER M. BALDWIN.

Witnesses:

D. D. WAGGOTT, F. L. BABCOCK. 

